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    Firmbase vs Cognism: different problems, different tools

    Anna Fontanes
    Firmbase vs Cognism: different problems, different tools

    By Anna Fontanes | 8 min read

    This is the comparison where we have to be most careful to be honest, because Cognism is genuinely excellent at what it does. If your single biggest problem is verified UK and European mobile numbers, Cognism is one of the best tools in the market and this page will not pretend otherwise. The real question is whether contact verification is your problem, or whether finding and prioritising the right UK accounts is. Those are different jobs. Here is how the two compare, with current 2026 pricing.

    The short version

    Choose Cognism if your bottleneck is verified contact data, especially phone-verified mobiles, and you have the budget for an enterprise annual contract.

    Choose Firmbase if your bottleneck is finding, qualifying and prioritising the right UK companies in the first place: you describe your ICP in plain English, AI research agents qualify each account against your criteria, and you work a ranked list drawn from the full Companies House universe, self-serve with no contract.

    At a glance

    What Cognism is brilliant at

    Cognism has the strongest EMEA contact data of any major provider, and its Diamond Data phone-verified mobiles are a real differentiator for teams whose motion depends on connecting by phone. It is GDPR-aligned, the coverage of UK and European decision-makers is deep, and for a team running high-volume outbound where dial connect rates drive revenue, that data quality pays for itself.

    We are not competing with that. If verified mobiles are the thing standing between you and pipeline, buy Cognism.

    Where the models diverge

    Cognism answers the question "what is the verified contact information for the people at these companies?" Firmbase answers an earlier and harder question: "which UK companies should I be targeting at all, and why?"

    • AI research agents qualify every account. This is the core of Firmbase. Describe your qualification criteria in plain English, including things that live in no database field, and Firmbase runs AI research agents against each company to check the fit, attach the evidence and score it. You get a ranked, pre-qualified list, not a raw export you still have to vet.
    • A natural-language ICP. Describe your ideal customer in plain English. No filter-builder, no boolean strings, no SIC-code archaeology.
    • A taxonomy that matches how you actually talk. Firmbase classifies companies the way the market does, Fintech, Martech, Proptech, Healthtech and so on, not blunt buckets like "software companies." You target the sector you sell to, not the nearest SIC code.
    • Built on the full UK universe with depth. Every UK-registered company via Companies House, with filed accounts and iXBRL financials, PSC and ownership structure and director history underneath, not just companies that already sit in a contact database.
    • Continuous, not a point-in-time pull. Firmbase monitors filings, hiring and funding and surfaces new matches as they appear.

    Pricing compared

    Cognism does not publish prices. It uses a platform fee plus per-seat model: roughly a $15,000 platform fee on the Grow (Platinum) tier or $25,000 on Elevate (Diamond), plus about $1,500 to $2,500 per user per year. A single user starts around $16,500 a year, and a five-seat team commonly lands near $22,500 to $37,500. Contracts are annual and paid upfront, with no monthly option.

    Firmbase is credits-based and self-serve, £49 to £299 a month, no contract. The two are not really in the same budget category, which is the point: they are solving different problems for different buyers.

    Can you use both?

    This is the combination that often makes sense today. Use Firmbase to define your UK ICP, let the research agents qualify and prioritise matching accounts, then use Cognism to pull verified mobiles for the accounts you have decided to work. Firmbase tells you who to call and why; Cognism helps you reach them. They are complementary far more than they are competitive.

    Worth flagging where this is heading, though: Firmbase is rolling out automated outbound across both LinkedIn and email, so the path from a plain-English prompt to a booked meeting happens inside Firmbase with no manual step in between. As that lands, more of the workflow that today spans two tools moves into one.

    FAQ

    Is Firmbase a Cognism alternative?

    Partly. If you are buying Cognism mainly for company discovery and targeting, Firmbase is a strong, cheaper, UK-complete alternative. If you are buying it for phone-verified mobiles, Firmbase does not replace that, and the two work well together.

    Does Cognism have good UK data?

    Yes. Its UK and European contact data, especially verified mobiles, is among the best available. That is its core strength.

    Why is Firmbase so much cheaper?

    Different model. Firmbase is self-serve and built on Companies House for discovery and research, rather than maintaining a globally verified contact database with a high fixed platform cost.

    What if I need verified phone numbers?

    Then Cognism (or a similar contact provider) earns its place. Use Firmbase to decide which accounts are worth verifying, so you are not paying to verify contacts at companies you should not be targeting.

    Start your free trial at app.firmbase.co/signup

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    Author Bio

    Anna Fontanes is a revenue operations consultant who has built account scoring and ICP frameworks for UK B2B sales teams across SaaS and professional services.